Parse config file from SPIFFS on a ESP32 #1215
Description
Hi Blachon,
I've been using V5 for quite a while. Now decided to move to V6. I've read a couple of time that I just should remove the "readBytes" (as mentioned [here]).(#1159) .
I've tried a lot of different options, but non is working.
Here's where it goes wrong I guess:
/*
std::unique_ptr<char[]> buf(new char[size]);
//credFile.readBytes(buf.get(), size);
credFile.read(buf,size);
Serial.println(buf.get());
*/
StaticJsonDocument<1024> jsonBuf;
DeserializationError error = deserializeJson(jsonBuf, credFile);
So I'm not sure if I still need the buffer or if I can just read the file directly..
Here's the full code:
bool loadConfig()
{
if (!SPIFFS.begin())
{
Serial.println("Failed to mount file system");
return false;
}
File credFile = SPIFFS.open("/cred.json", "r");
if (!credFile)
{
Serial.println("Failed to open cred file");
return false;
}
size_t size = credFile.size();
Serial.print("Size cred file: ");
Serial.println(size);
if (size > 1024)
{
Serial.println("Cred file is bigger than 1024");
return false;
}
/*
std::unique_ptr<char[]> buf(new char[size]);
//credFile.readBytes(buf.get(), size);
credFile.read(buf,size);
Serial.println(buf.get());
*/
StaticJsonDocument<1024> jsonBuf;
DeserializationError error = deserializeJson(jsonBuf, credFile);
if (error)
{
Serial.println("Failed to parse cred file");
return false;
}
/*
const char *J_ssid = json["ssid"];
const char *J_pass = json["pass"];
const char *J_deviceId = json["ATTID"];
const char *J_token = json["ATTToken"];
const char *J_CONFIG_FIRMWARE_UPGRADE_URL = json["upgrade_URL"];
const char *J_tennant_URL = json["tennant_URL"];
*/
strcpy(credentials.ssid, jsonBuf["ssid"]);
strcpy(credentials.pass, jsonBuf["pass"]);
strcpy(deviceId, jsonBuf["ATTID"]);
strcpy(token, jsonBuf["ATTToken"]);
strcpy(CONFIG_FIRMWARE_UPGRADE_URL, jsonBuf["upgrade_URL"]);
strcpy(certURL, jsonBuf["cert_URL"]);
Serial.print("SSID: ");
Serial.println(ssid);
Serial.print("pass: ");
Serial.println(pass);
Serial.print("ATT settings: ");
Serial.println(deviceId);
Serial.println(token);
return true;
}
I'm using an Adafruit ESP32 feather and Platformio on VS code.
Regards,
David